Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3OSK callsign genealogy
Currently held by LAYTON, BERNARD R
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by W3OSK's current licensee, walking backwards.
- Chaiyakul, JeerapunMDgranted 2020-08-28cancelled 2020-09-18
Successor callsigns
Callsigns held now by people who previously held W3OSK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3OSK, oldest first.
- LAYTON, BERNARD R PA1997-03-11 → cancelled 2009-03-12
- Chaiyakul, Jeerapun MD2020-09-18 active